Effect of hydraulic retention time on continuous biocatalytic calcification reactor

Low-cost cultivation of Sporosarcina pasteurii strain in food-grade yeast extract medium for microbially induced carbonate precipitation (MICP) application

“…In recent decades, microbial urease for MICP process has fervently seen an increased relevance as a catalyst for the precipitation of calcium carbonate (CaCO 3 ) for various applications in biotechnological and engineering disciplines. Investigations on use of ureolysis-driven MICP process has been widely studied for the soil strengthening and stabilization, remediation of concrete cracks, restoration of limestone surfaces, mitigation of soil erosion, treatment of industrial wastewater and remove heavy metals (Burbank et al, 2013;De Muynck et al, 2010;Fu and Wang, 2011;Işik et al, 2010;Sarda et al, 2009;Van Tittelboom et al, 2010;Whiffin et al, 2007). MICP via ureolysis process can also be used for biosensor, agriculture and healthcare applications (Phang et al, 2018).…”

Biomineralization Mediated by Ureolytic Bacteria Applied to Water Treatment: A Review

“…The microbiological precipitation of minerals has several technological applications, such as the restoration of limestone monuments and statues, biocement production, improvement of soil quality and removal of soluble pollutants such as heavy metals and radioactive elements [30]. Additionally, this process promoted specifically by the ureolytic capacity of bacterial species also allows the removal of secondary ions such as calcium and magnesium present in wastewater [33,41,42] and in seawater [43]. Furthermore, the precipitation of calcium carbonates mediated by ureolytic bacteria is widely described in the literature, mainly under the application of soil biocementation [8,44,45].…”

“…Finally, it is necessary to consider the economic limitations, especially in the replacement of reagents and nutrients of analytical grade used in most studies by others of lower cost. Additionally, although some studies, such as those by Hammes et al [33] and IŞik et al [41], use a semicontinuous reactor, there are no other described technologies that allow for further thought in regards to scale thus far.…”